| /* Copyright (C) 2009-2012 Free Software Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| |
| #include "server.h" |
| #include "lynx-low.h" |
| |
| #include <stdint.h> |
| #include <stddef.h> |
| #include <limits.h> |
| #include <sys/ptrace.h> |
| |
| /* The following two typedefs are defined in a .h file which is not |
| in the standard include path (/sys/include/family/ppc/ucontext.h), |
| so we just duplicate them here. */ |
| |
| /* General register context */ |
| typedef struct usr_econtext_s |
| { |
| uint32_t uec_iregs[32]; |
| uint32_t uec_inum; |
| uint32_t uec_srr0; |
| uint32_t uec_srr1; |
| uint32_t uec_lr; |
| uint32_t uec_ctr; |
| uint32_t uec_cr; |
| uint32_t uec_xer; |
| uint32_t uec_dar; |
| uint32_t uec_mq; |
| uint32_t uec_msr; |
| uint32_t uec_sregs[16]; |
| uint32_t uec_ss_count; |
| uint32_t uec_ss_addr1; |
| uint32_t uec_ss_addr2; |
| uint32_t uec_ss_code1; |
| uint32_t uec_ss_code2; |
| } usr_econtext_t; |
| |
| /* Floating point register context */ |
| typedef struct usr_fcontext_s |
| { |
| uint64_t ufc_freg[32]; |
| uint32_t ufc_fpscr[2]; |
| } usr_fcontext_t; |
| |
| /* Index of for various registers inside the regcache. */ |
| #define R0_REGNUM 0 |
| #define F0_REGNUM 32 |
| #define PC_REGNUM 64 |
| #define MSR_REGNUM 65 |
| #define CR_REGNUM 66 |
| #define LR_REGNUM 67 |
| #define CTR_REGNUM 68 |
| #define XER_REGNUM 69 |
| #define FPSCR_REGNUM 70 |
| |
| /* Defined in auto-generated file powerpc-32.c. */ |
| extern void init_registers_powerpc_32 (void); |
| |
| /* The fill_function for the general-purpose register set. */ |
| |
| static void |
| lynx_ppc_fill_gregset (struct regcache *regcache, char *buf) |
| { |
| int i; |
| |
| /* r0 - r31 */ |
| for (i = 0; i < 32; i++) |
| collect_register (regcache, R0_REGNUM + i, |
| buf + offsetof (usr_econtext_t, uec_iregs[i])); |
| |
| /* The other registers provided in the GP register context. */ |
| collect_register (regcache, PC_REGNUM, |
| buf + offsetof (usr_econtext_t, uec_srr0)); |
| collect_register (regcache, MSR_REGNUM, |
| buf + offsetof (usr_econtext_t, uec_srr1)); |
| collect_register (regcache, CR_REGNUM, |
| buf + offsetof (usr_econtext_t, uec_cr)); |
| collect_register (regcache, LR_REGNUM, |
| buf + offsetof (usr_econtext_t, uec_lr)); |
| collect_register (regcache, CTR_REGNUM, |
| buf + offsetof (usr_econtext_t, uec_ctr)); |
| collect_register (regcache, XER_REGNUM, |
| buf + offsetof (usr_econtext_t, uec_xer)); |
| } |
| |
| /* The store_function for the general-purpose register set. */ |
| |
| static void |
| lynx_ppc_store_gregset (struct regcache *regcache, const char *buf) |
| { |
| int i; |
| |
| /* r0 - r31 */ |
| for (i = 0; i < 32; i++) |
| supply_register (regcache, R0_REGNUM + i, |
| buf + offsetof (usr_econtext_t, uec_iregs[i])); |
| |
| /* The other registers provided in the GP register context. */ |
| supply_register (regcache, PC_REGNUM, |
| buf + offsetof (usr_econtext_t, uec_srr0)); |
| supply_register (regcache, MSR_REGNUM, |
| buf + offsetof (usr_econtext_t, uec_srr1)); |
| supply_register (regcache, CR_REGNUM, |
| buf + offsetof (usr_econtext_t, uec_cr)); |
| supply_register (regcache, LR_REGNUM, |
| buf + offsetof (usr_econtext_t, uec_lr)); |
| supply_register (regcache, CTR_REGNUM, |
| buf + offsetof (usr_econtext_t, uec_ctr)); |
| supply_register (regcache, XER_REGNUM, |
| buf + offsetof (usr_econtext_t, uec_xer)); |
| } |
| |
| /* The fill_function for the floating-point register set. */ |
| |
| static void |
| lynx_ppc_fill_fpregset (struct regcache *regcache, char *buf) |
| { |
| int i; |
| |
| /* f0 - f31 */ |
| for (i = 0; i < 32; i++) |
| collect_register (regcache, F0_REGNUM + i, |
| buf + offsetof (usr_fcontext_t, ufc_freg[i])); |
| |
| /* fpscr */ |
| collect_register (regcache, FPSCR_REGNUM, |
| buf + offsetof (usr_fcontext_t, ufc_fpscr)); |
| } |
| |
| /* The store_function for the floating-point register set. */ |
| |
| static void |
| lynx_ppc_store_fpregset (struct regcache *regcache, const char *buf) |
| { |
| int i; |
| |
| /* f0 - f31 */ |
| for (i = 0; i < 32; i++) |
| supply_register (regcache, F0_REGNUM + i, |
| buf + offsetof (usr_fcontext_t, ufc_freg[i])); |
| |
| /* fpscr */ |
| supply_register (regcache, FPSCR_REGNUM, |
| buf + offsetof (usr_fcontext_t, ufc_fpscr)); |
| } |
| |
| /* Implements the lynx_target_ops.arch_setup routine. */ |
| |
| static void |
| lynx_ppc_arch_setup (void) |
| { |
| init_registers_powerpc_32 (); |
| } |
| |
| /* Description of all the powerpc-lynx register sets. */ |
| |
| struct lynx_regset_info lynx_target_regsets[] = { |
| /* General Purpose Registers. */ |
| {PTRACE_GETREGS, PTRACE_SETREGS, sizeof(usr_econtext_t), |
| lynx_ppc_fill_gregset, lynx_ppc_store_gregset}, |
| /* Floating Point Registers. */ |
| { PTRACE_GETFPREGS, PTRACE_SETFPREGS, sizeof(usr_fcontext_t), |
| lynx_ppc_fill_fpregset, lynx_ppc_store_fpregset }, |
| /* End of list marker. */ |
| {0, 0, -1, NULL, NULL } |
| }; |
| |
| /* The lynx_target_ops vector for powerpc-lynxos. */ |
| |
| struct lynx_target_ops the_low_target = { |
| lynx_ppc_arch_setup, |
| }; |